Compare Protector Series

Digitally Enhanced SES Servo Electronic Automatic Voltage Regulator

TECH SPECS

Single Phase

SES-H-S Model
Added I/P Breaker Protection
1 to 100 KVA

Three Phase

SES-H-3P-S Model
Added I/P Breaker Protection
60 to 1,000 KVA

Three Phase

SESL-H-3P-S Model
Large Capacity Rating
200 to 2,000 KVA

Single Phase

SES-H-S Model
Added I/P Breaker Protection
1 to 100 KVA

Three Phase

SES-H-3P-S Model
Added I/P Breaker Protection
60 to 1,000 KVA

Three Phase

SESL-H-3P-S Model
Large Capacity Rating
200 to 2,000 KVA

PhaseSingle Phase, 2 Wire 
Capacity1 to 100 KVA
Input Circuit BreakerYes
Input Voltage

Low Voltage Model:

100, 110, 120 V

High Voltage Model:

200, 220, 230, 240 V

 

Choose a suitable input voltage according to your nominal voltage.

 

Input Voltage Tolerance

±15%, ±20%, ±25%, ±30%, ±35%

 

Choose a suitable range according to your minimum and maximum incoming voltage levels.

 

Set Output Voltage

Low Voltage Model:

100, 110, 120 V

High Voltage Model:

200, 220, 230, 240 V

 

Presettable output voltage according to your electrical configuration.

 

Output Voltage AccuracyStable ±1% of set output voltage, regardless of load change

Phase

Three Phase, 3 or 4 Wire 

 

Choose according to your electrical configuration.

 

Capacity6 to 600 KVA
Input Circuit BreakerYes

Input Voltage

Low Voltage Model:
208, 220, 230, 240 V
High Voltage Model:
380, 400, 415 V

 

Choose a suitable input voltage according to your nominal voltage.

 

Input Voltage Tolerance

±15%, ±20%, ±25%, ±30%, ±35%

 

Choose a suitable range according to your minimum and maximum incoming voltage levels.

 

Set Output Voltage

Low Voltage Model:
208, 220, 230, 240 V
High Voltage Model:
380, 400, 415 V

 

Presettable output voltage according to your electrical configuration.

Output Voltage AccuracyStable ±0.5% of set output voltage, regardless of load change

Phase

Three Phase, 3 or 4 Wire

 

Choose according to your electrical configuration.

 

Capacity200 to 2,000 KVA
Input Circuit BreakerNo

Input Voltage

Low Voltage Model:
208, 220, 230, 240 V
High Voltage Model:
380, 400, 415 V

 

Choose suitable input voltage according to your nominal voltage.

 

Input Voltage Tolerance

±10%, ±15%, ±20%, ±25%, ±30%, ±35%

 

Choose a suitable range according to your minimum and maximum incoming voltage levels.

Set Output Voltage

Low Voltage Model:
208, 220, 230, 240 V
High Voltage Model:
380, 400, 415 V

 

Presettable output voltage according to your electrical configuration.

 

Output Voltage AccuracyStable ±0.5% of set output voltage, regardless of load change

PERFORMANCE

Efficiency98%
Response Time< 1.5 ms
Correction Time
10% supply variation corrected to within 2.5% in 0.6 seconds
Power Factor
Any lagging to 0.95 leading
Total Harmonic Distortion< 1% lagging
Frequency47 to 65 Hz

PROTECTION

Transient Voltage Surge Suppression (TVSS)Surge Rating:
– 10x max. current rating for 2 seconds
– 3x max. current rating for 1 minute
– 2x max. current rating for 2 minutes
Soft Over Voltage Protection (S.O.V.P)

Soft Switch-On capabilities ensures the output voltage is set at minimum upon switch on — before commencing stabilization.

Protects load equipment from excessive and damaging start up voltage surges.

Automatic Bypass Control SwitchProtects your load equipment against high input voltages.
Over/Under Voltage and Phase Failure Protection(5)Presettable tripping voltage value, according to critical workloads.
Short Circuit ProtectionFitted fuses, MCB, MCCB
Volt-free Remote MonitoringNormally Closed (NC) and Normally Open (NO) Dry Contacts allows for fault detection, remotely.

DISPLAY

Voltmeter, Ammeter

ENCLOSURE

Construction

Conforms to BS EN 60529

Indoor Units:
IP20 (NEMA 1 Style)
Outdoor Units:
Sheet Steel (Electro Galvanised) Enclosures to IP54 (NEMA 3S Style)

Environment
  • Temperature range –15 to 45 °C. Derate by 2% for each additional °C Up to max 60 °C .
  • Maximum altitude 1000m.
  • Derate by 2.5% for each additional 500m.
  • Suitable for indoor tropical use 95% RH (non- condensing).
DimensionsSee Dimensions

CONFORMITY

EMC Conformance

Complies with BS EN 55022 and the relevant parts of the BS EN 61000 series of standards.

 

CE ConformityCE Marked – being fully compliant with European Union Directives 2004/108/EC (The EMC Directive) and 2006/95/EC (The Low Volt- age Directive).

Full Warranty

All Ashley Edison SES Protector Series of Automatic Voltage Regulators come complete with 3-Years Full Warranty on all parts.

Overview

SES 1Φ SES 3Φ SESL 3Φ
MBB Card Standard Analog Card check35px check35px
Automatic Bypass Control Switch cross33px check35px check35px
Input Circuit Breaker check35px check35px cross33px
Over/Under Voltage Protection + Phase Failure Protection Optional check35px check35px
Short Circuit Protection check35px check35px check35px
Transient Voltage Surge Suppression (TVSS) check35px check35px check35px
Soft Over Voltage Protection (S.O.V.P) check35px check35px check35px
External Voltmeter check35px Optional for <10KVA check35px Optional for <400KVA check35px Optional for <400KVA
External Ammeter check35px Optional for <10KVA check35px Optional for <400KVA check35px Optional for <400KVA
Volt-Free Remote Monitoring Optional Optional check35px
Lightning Surge Arrestor Optional for Indoor Units.
Fitted with Outdoor Units.
Optional for Indoor Units.
Fitted with Outdoor Units.
Optional for Indoor Units.
Fitted with Outdoor Units.
Digital Power Meter Optional Optional Optional
Step Down Voltage Feature Optional Optional Optional
Shielded Isolation Transformer Optional Optional Optional
Output Circuit Breaker Optional Optional Optional
External Digital Power Meter Optional Optional Optional
Mimic Panel Optional Optional Optional
Manual Maintenance Bypass Switch Optional Optional Optional
Main System Switchboard Optional Optional Optional
Digital Power Meter Optional Optional Optional
Step Down Voltage Feature Optional Optional Optional
Shielded Isolation Transformer Optional Optional Optional
Output Circuit Breaker Optional Optional Optional
External Digital Power Meter Optional Optional Optional
Mimic Panel Optional Optional Optional
Manual Maintenance Bypass Switch Optional Optional Optional
Main System Switchboard Optional Optional Optional

Dimensions

Single Phase

SES-H-S Model
Added I/P Breaker Protection
1 to 100 KVA

Three Phase

SES-H-3P-S Model
Added I/P Breaker Protection
60 to 1,000 KVA

Three Phase

SESL-H-3P-S Model
Large Capacity Rating
200 to 2,000 KVA

FAQ

If you’re wondering how simple voltage regulation can overcome huge voltage anomalies, you’re not alone. There is a sea of information online explaining how voltage stabilisers work. However, not many are comprehensive enough to explain the in’s and out’s of what exactly goes on within these innovative works of wonders.

 

For servo electronic design voltage stabilisers:

 

  1. Any form of erratic or unstable input voltage is immediately detected by microprocessors in the voltage stabiliser.
  2. This triggers the servo motor driver to instantly activate and move the servo motor’s shaft across the windings of a variable transformer – AUTOMATICALLY adjusting the output voltage value to your desired prescribed limit.
  3. The regulated voltage is then supplied through the secondary of the Buck-Boost Transformer, and then fed to your load equipment or appliances in use.

 

For the full in-depth literature with quantitative and qualitative research explaining all the how’s and why’s, download our complimentary 22-page PDF white paper to learn more.

 

Download Complimentary White Paper >>

For Servo Electronic Voltage Stabilisers, maintenance is absolutely minimal. Quarterly checks on metering displays and yearly ocular (visual) inspections are strongly encouraged. Any electrically trained technician is more than capable of carrying out these simple maintenance tasks – with ease.

 

For a virtually maintenance-free solution, explore our Extra Robust Magnetic Induction design that’s engineered for maximum uptime protection.

 

Discover Maintenance-Free Series >>

Yes. Ashley Edison is an ISO 9001:2015 Certified organisation.

 

With a wealth of manufacturing experience acquired over 40 years, Ashley Edison powers on, and harnesses its industry-certified expertise to craft world-class products to perfection.

 

Spread across three offices worldwide, we operate as a single integrated powerhouse—fully outfitted with full-stack in-house product design, prototyping, and manufacturing teams to meet your unique needs.

 

Read Our Design Philosophy >>

Equipment failures can be frustratingly painful to deal with. Severe voltage drops and heavy voltage fluctuations from the mains – are some of the culprits crippling your uptime.

 

The fastest and most cost-efficient method (also adopted by Grid Operators and MNCs) is to incorporate a dependable voltage regulating solution into your electrical system.

 

This facility-saving quick fix eliminates all forms of harmful voltage irregularities, drops and fluctuations – regardless of load change in your electrical system.

 

An optimally stabilised output voltage supply provides robust protection for your high value equipment.

 

What you’re looking for is an answer that guarantees improved operational efficiency, reliability, prolonged healthy lifespan and ultimately, a solution that safeguards your precious uptime – permanently.

 

Need help picking the perfect voltage regulating solution? Speak to us today! Our consultants are happy to assist you with your challenges – every step of the way.

 

Speak To Our Consultants >>

When it comes to mission-critical applications and high value equipment, an uninterruptible power supply (UPS) is used for backup power when your regular power source fails.

 

If you’re anything like us, you’d believe that leaving things to chance is not practised in the electrical engineering community.

 

Which is why we too, believe in redundancy systems.

 

Supplying voltage stabilisers to mission-critical applications like datacenter and IT system infrastructures has become a crucial part of uptime protection in the industry.

 

Should the UPS require any form of shut down or scheduled maintenance, you can be assured that your voltage stabiliser continues to deliver clean, stable voltage supplies to your load, all day, everyday.

 

View All Voltage Solutions >>

There are 4 different types of voltage stabiliser designed for commercial and industrial applications: Servo Electronic, Magnetic Induction, Static Tap Switching, Solid State (Ferroresonant).

 

Each design has its pro’s and con’s. While Servo Electronic based Voltage Stabilisers have mainly dominated the market, the ever growing demand for uncompromising reliability and maximum durability in voltage protection has caused an unsurprising shift towards the Magnetic Induction design.

 

Static tap switching design (thyristor based) is favoured by non critical projects that are desperately constrained by budgets. When technical specifications are written under non stringent requirements (e.g. voltage output of ±10%), cheaper prices may be preferred over quality.

 

Solid State Design (ferroresonant) is highly dependable. With no moving parts, the ferroresonant voltage stabiliser is not subject to mechanical wear and tear. Due to its nature, it is typically suitable for single phase applications.

 

To learn more on which design is ideal for your application, read our comprehensive blog article (11min read) to find out more.

 

Otherwise, drop us an email at [email protected] and our consultants will be in touch with you within 24hrs.

 

Speak To Our Consultants >>

Ashley Edison Automatic Voltage Stabilisers are designed as “Plug-And-Forget” voltage protection solutions.

 

Once commissioned, the incoming voltage is INSTANTLY regulated to your desired set output voltage values within 1.5ms.

 

Voltage levels are automatically and constantly maintained during the day when loading is high, and throughout the night when loading is low – giving you a peace of mind and unstoppable confidence that your equipment are well taken care of, with no guesswork needed.

 

 

Explore Products >>

At Ashley Edison Global, we believe in engineering solutions that are built to last. By championing the need to optimise rather than replace, we safeguard the maintenance budgets of our clients by preventing unnecessary expenditure on replacements or repairs. No detail is too small when product design quality is concerned.

 

In our manufacturing process, every product is closely inspected as they pass through assembly lines with an intense focus on durability and maintainability—while paying close attention to safety as a top priority.

 

With over 40 years of research and development, Ashley Edison products have been put through the test of time, enabling us to break boundaries by greatly improving MTBF and total dependability. This results in the perfect marriage of performance and reliability.

 

Our industrial and commercial clients from over 104 countries around the world have achieved a constant stable and clean power supply after successful installation of our products, and there are no reported operational issues to date since 2012.

 

Despite unfavourable weather conditions, your AVR should last you a lifetime – if you take good care of it.

 

Being said, our philosophy of building lasting voltage solutions is proven to stand the test of time, through this proven case study below:

Read Case Studies & Success Stories >>

We design intuitive products with simplicity and ease-of-use in mind, eliminating the chore of complex disassembly and reassembly—especially in circumstances that merely require the replacing of minor components.

 

By making regular inspections a straightforward and simple process, we ensure that our products run smoothly throughout their expected healthy lifespan, with absolute certainty and maintainability.

 

Every Ashley Edison Automatic Voltage Stabiliser comes inclusive of 3-Year full warranty on all parts.

 

CONNECT WITH US
TO DISCOVER MORE.

From brownouts to severe voltage fluctuations, Ashley Edison takes care of all your power needs by delivering optimised, stable voltage supply to your electrical system.

 

Curious to learn more? Get in touch with us. We’ll get back to you with a quote or solution within 24 hours and put all your questions to rest.

ASHLEY Edison International LTD
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Single Phase

SES-H-S Model
Added I/P Breaker Protection
1 to 100 KVA

Enclosure 102
270W x 460H x 490D (mm)
≤ 20 KVA ± 30%
≤ 15 KVA ± 20%
≤ 10 KVA ± 25%
≤ 10 KVA ± 15%

Enclosure 103
400W x 580H x 500D (mm)
25 KVA ± 15%
20 KVA ± 20%
15 KVA ± 25%

Enclosure 332
380W x 670H x 780D (mm)
30 KVA ± 15%

Enclosure 333
490W x 800H x 990D (mm)
40 ~ 50 KVA ± 15%
25 ~ 30 KVA ± 20%
20 ~ 25 KVA ± 25%
15 ~ 20 KVA ± 30%

Enclosure 334
540W x 900H x 1000D (mm)
60 ~ 75 KVA ± 15%
40 ~60 KVA ± 20%
30 ~ 50 KVA ± 25%
25 ~ 40 KVA ± 30%

Three Phase

SES-H-3P-S Model
Added I/P Breaker Protection
60 to 1,000 KVA

 

Enclosure 333
490W x 800H x 990D (mm)
≤ 100 KVA ± 15%

 

Enclosure 334
540W x 900H x 1000D (mm)
120 – 150 KVA ± 15%

 

Enclosure 335
1000W x 1300H x 580D (mm)
180 – 300 KVA ± 15%
120 – 200 KVA ± 20%
120 – 150 KVA ± 25%

 

Enclosure 336H
1880W x 1480H x 660D (mm)
400 KVA ± 15%
250 KVA ± 20%
180 ~ 200 KVA ± 25%

 

Enclosure 337H
1880W x 1950H x 880D (mm)
500 KVA ± 15%
300 KVA ± 20%
250 KVA ± 25%

 

Enclosure 339H
2170W x 1950H x 1340D (mm)
600~1,000 KVA ± 15%
400~600 KVA ± 20%
300~400 KVA ± 25%

Three Phase

SESL-H-3P-S Model
Large Capacity Rating
200 to 2,000 KVA

 

Enclosure 335
1000W x 1300H x 580D (mm)
250~300 KVA ± 15%
120~200 KVA ± 20%

 

Enclosure 336
1280W x 1480H x 660D (mm)
400 KVA ± 15%
250 KVA ± 20%

 

Enclosure 337H
1880W x 1950H x 880D (mm)
500 KVA ± 15%
300 KVA ± 20%

 

Enclosure 339
1470W x 1950H x 1340D (mm)
600 ~ 1,500 KVA ± 15%
400 ~ 1,000 KVA ± 20%
300 ~ 750 KVA ± 25%
300 ~ 600 KVA ± 30%

Stay Safe With Greater Protection

As safety is our utmost priority, Ashley Edison prepares for every scenario possible
—taking the puzzle out of your protection.

Designed And Engineered With Safety In Mind

We leave nothing to chance when it comes to larger capacity units (≥400KVA). By installing high-quality protective acrylic shields in front of live parts, we ensure the safety of your personnel at all times. For enhanced protection during installation, all distances between uninsulated metal parts, busbars, and cable sizes are compliant with IEC61439-1 and IEC 61439-2 guidelines.

Outfitted with fireproof cable trunking, this protective solution safeguards against long fire exposure even in hazardous areas and explosive atmospheres—providing maximum safety for mission critical applications.

Fuss-Free Installation. Seamless Operations.

To ensure ease of installation, Ashley Edison addresses the concerns of contractors and installers by keeping it simple.

Internal-AVR

ALL TERMINATION POINTS ARE MANUFACTURED FOR EASY ACCESS

We keep the installation process simple and streamlined by allowing sufficient working space for installers. Taking the nut and bolt intrusions into consideration, we ensure that the distance between the uninsulated metal parts, the busbars, and cable sizes are compliant with IEC61439-1 and IEC 61439-2 guidelines.

 

Even in units with larger capacities, all busbar terminals are clearly marked out, and well positioned in line for easy identification of individual input and output terminations. Installation of these terminations are similar to those practised in high voltage transformers.

Easy Maintenance

Annual Ocular Maintenance
Visual Inspection 230
#1

Conduct Visual Inspection On Voltmeter:

Ensure reading is set to your desired set output voltage value (e.g. 230V).

LED Status
#2

Ensure LED Status Indicators are at “Normal”.

Subtxt LogoAsset 62 RGB
#3

Visual Observation Of Variable Transformer Surface:

Use airbrush for dusty environments if necessary.

Subtxt LogoAsset 72 RGB
#4

Visual observation if carbon brush is not worn out.

Moving Motor
#5

Conduct visual inspection to check variable transformers are all regulating (moving).

AE-MBB-PCB-Card-dark

Accuracy. Beyond Imagination.

The digitally enhanced Ashley Edison MBB Card ensures pinpoint voltage stabilisation against the most erratic anomalies, allowing you to protect precious uptime, effortlessly. Harnessing ultra precision capabilities to produce some of the tightest output voltage tolerance available in the industry, the Ashley Edison MBB Card delivers ±0.5% voltage accuracy, enabling your load equipment to enjoy optimal voltage supplies, regardless of load change in your electrical system.

Expert Digital Control

Utilising the advantageous measurements of true RMS, the Ashley Edison MBB Card’s reads both perfect, sinusoidal waves, as well as complex, distorted non sinusoidal waves—up to 0.1V accuracy. Coupled with lightning fast response time of 1.5ms, this expert digital control feature equips your load with total voltage protection that is precise, continuous and ultra responsive.

AE Digital Control Display_230v

Universal Presettable Function

The Universal Presettable Function onboard the Ashley Edison MBB Card allows seamless control of your desired output voltage value on all 3 Phases—with just a touch of a button. This multifunctional feature enables each AVR to fully operate with just 1 card, instead of separate cards for each individual phase. Fitted LED Output Voltmeter Display and Alert Indicator better facilitates easy status monitoring while performing maintenance on your AVR.

AE MBB Card

Microcontroller Unit (MCU)

MicroController Unit (MCU) helps you to deliver high speed and reliable efficiency in the AVR’s operations with less heat generation and reduced power consumption. Used in Supercomputers, Surface Mount Technology (SMT) allows components in the Ashley Edison MBB Card to be aligned closer together, creating a more compact and lightweight end product. Additional safety wire-to-board feature establishes fail-proof connectivity between circuits—so you can work safely on your AVR.